Anchor bolt



Jan. 16, 1934- c. F. HETHERINGTON 1,943,731

ANCHOR BOLT Filed July 18, 1932 2 Sheets-Sheet 1 1934- c. F. HETHERINGTON 1,943,731

ANCHOR BOLT Filed July 18, 1932 2 Sheets-Sheet 2 Patented Jan. 16, 1934 UNITED sr TEs PATENT OFFICE ANCHOR BOLT Carl F. Hetherington, St. Louis, Mo. ApplicationJuly 18, 1932. Serial No. 623,226

' 9 Claims. (01. 72-105) My invention relates to means for anchoring machines or structural members to concrete bases and it particularly has for an object toprovide a simple, inexpensive device for the purpose, and which is so designed that the bolt will not become detached from its anchor sleeve and lost in shipment.

A further object is to provide-an anchor bolt with an anchoring sleeve so constructed as to permit the bolt to be moved out of alignment with the axis of the sleeve When it is desired to do so if the holes of the machine base or the structural member base are inaccurately spaced.

Again, it is an object of my invention to provide an anchor bolt with an anchoring sleeve in which, while the bolt may be deflected from alignment, it is normally held co-axially with the sleeve by a yieldable retainer.

In the drawings Figure l is a detail elevation (parts being broken away) showing one embodiment of my invention. 1

Figure 2 is a cross section "on the line 2-2 of Figure 1; y

Figure 3 is a cross sectionpn the line 33 of Figure 1. i

Figure {l is an end view of Figure 1.

Figure 5 is a detail elevation of a modification of the invention.

Figure 6 is a cross section on the line 66 of Figure 5.

Figure 7 is an end elevation of the embodiment of the invention shown in Figures 5 and 6.

Figure 8 is a side elevation of another embodimerit of the invention.

Figure 9 is a cross section on the line 9--9 of Figure 8.

Figure 10 is a cross section on the line 10-10 of Figure 9.

Figure 11 is a perspective view of the centering spring clip per se.

In the drawings in which like numerals of reference designate like parts in all the figures, 1 is the bolt having the usual head 2, the same being located within a cylindrical sleeve. The sleeve is of a diameter sufficient to pass the head of the bolt.

In order to anchor the bolt within the sleeve the sleeve is squeezed over the bolt head as at 6 and '7, the flats 7 engaging the adjacent flats of the bolt head, preferably allowing some looseness or play. The outer edge of the sleeve is squeezed over the outer face of the bolt head slightly, as

indicated at 5. The sleeve is also squeezed or mashed at 4 around the neck of the bolt to hold the bolt against being pulled out of the sleeve.

In order that the bolt may be moved out of alignment with the sleeve after the sleeve shall have been set in concrete so that the bolt may be made to conform to any irregularities in the alignment of the machine base or structural member base which is to be anchored down-the squeezing of the sleeve around the bolt and head is such that the bolt may be wobbled. In order, however, normally to retain the bolt 'in axial alignment with the sleeve I may provide a spring clip 8 and clip the same over the bolt and slide it down into' the sleeve to hold the bolt against wobbling while the anchor is being set in the concrete base. After the anchor shall have been set in the concrete base the spring clip may be removed if found desirable to do so. This removal, however, is not necessary since the clip is yieldable and permits the bolt to be deflected when lateral pressure is applied to it.

Some bolts have hook heads and some are headless. In the event that the bolt is a hook head bolt the sleeve will be mashed or fiattened'down over. the hook and into the loop thereof so as to hold the bolt against pulling out of the sleeve while still permitting some lateral movement of the free end of the bolt in its sleeve which movement, however, is normally restrained by the spring clip 8 above referred to.

Where a headless bolt 9 is used (see Figures 5, 6 and 7) when the sleeve is flattened the bolt is also flattened to constitute wings 11 that become embedded in the flattened portions of the sleeve 10, the sleeve being also flattened around the cylindrical extremity 14 of the bolt 9, thus preventing the bolt being withdrawn from the sleeve longitudinally in either direction.

In Figures 8, 9 and 10 I have indicated another embodiment of my invention by reference towhich it will be observed that the bolt 15 has its head 16 located in the cored out chamber 19 of a split head casting 18 which has a cylindrical boss 20 over which the end of the pipe sleeve 1'? is forced and held by retaining friction. When the sleeve 17 and the head casting are embedded in concrete the bolt is securely anchored although it may rock laterally to accommodate itself to any inaccuracies in the bolt hole of the machine or structural member which is to be bolted down. Of course the spring clip 8 used with the other embodiments of the invention may be used with this.

The principal idea of my invention lies in the provision of an anchor bolt for machinery, building columns, etc., assembled with a steel sleeve and mechanically fixed to each other in such a way that the head of the bolt,or the bottom end if made without a head, cannot pull out of the sleeve when the nut on the bolt is tightened, nor turn in the sleeve when the assembly is to be set in concrete in the usual manner.

The wire clip is provided principally for convenience in the manufacturing operation for centering the bolt in the pipe at the upper end while the pipe is being squeezed around the head or lower end of the bolt, the clip to remain in position permanently if desired or it is easily removable if necessary to deflect the bolt when setting the machinery or structural member.

In the embodiment shown in Figures 8, 9, l0 and 11 the two halves of the head casting are assembled about the bolt head and then the pipe sleeve is driven over the cylindrical boss, thus making a unit of bolt, sleeve and head castings. I wish to emphasize the points of my invention; namely, that the head of the bolt is down in the concrete; that the head of the bolt cannot turn in the sleeve and the sleeve cannot turn in the concrete; also that the sleeve cannot become lost from the bolt in shipment; also that the bolt head is not so rigidly held in the sleeve that the bolt may not easily be deflected in case it is desirable to do so as hereinbefoi'e referred to. The spring wire clip maintains concentricity for the purposes of assembly, but will not oppose any considerable resistance to such deflection.

What I claim is:

l. A bolt, a sleeve on the bolt, means to anchor one end of the bolt within the sleeve, and a spacing clip on the bolt in the sleeve.

: 2. In combination with a bolt, a sleeve of greater internal diameter than the diameter of the bolt and its head for loosely receiving the bolt, said bolt having a head, said sleeve being restricted around the head to hold the bolt against withdrawal from the sleeve and against swiveling.

3. In combination with a bolt, a sleeve loosely receiving the bolt, said bolt having a head, said .sleeve being restricted around the head to hold the bolt against withdrawal from the sleeve and against swiveling, and a bolt-centering yieldable .clip located on the bolt within the sleeve.

4. A bolt, a cylindrical sleeve through which the bolt extends, means in one end of the sleeve for anchoring the adjacent end of the bolt thereto and therein while leaving the other end of the bolt free to move laterally within the sleeve, the sleeve being of substantially greater internal diameter than the diameter of the bolt.

5. A bolt, a cylindrical sleeve through which the bolt extends, means in one end of the sleeve for anchoring the adjacent end of the bolt thereto While leaving the other end of the bolt free to move laterally, and a centering means in the sleeve around the bolt.

6. A bolt, a cylindrical sleeve through which the bolt extends, means in one end of the sleeve for anchoring the adjacent end of the bolt thereto while leaving the other end of the bolt free to move laterally, and a centering means in the sleeve around the bolt, said bolt anchoring means'comprising the squeezing of the sleeve around the bolt head.

7. A bolt, a cylindrical sleeve through which the bolt extends, means in one end of the sleeve for anchoring the adjacent end of the bolt thereto while leaving the other end of the bolt free to move laterally, and a centering means in the sleeve around the bolt, said bolt anchoring means comprising a split head. casting having a bolt head receiving cavity and having a cylindrical boss to fit within one end of the cylindrical sleeve and be frictionally held thereto.

8. A bolt, a cylindrical sleeve of greater internal diameter than the diameter of the bolt and its head through which sleeve the bolt extends, means at one end of the sleeve for anchoring the adjacent end of. the bolt thereto and therein against longitudinal movement and against swiveling on its axis While leaving the bolt free to swing laterally on its head as a pivot.

9. A bolt, a cylindrical sleeve through which the bolt extends, means at one end of the sleeve for anchoring the adjacent end of the bolt thereto against longitudinal movement and-against swiveling on its axis while leaving the free end of the bolt movable laterally, and a bolt centering retainer within the sleeve adjacent the free end of the bolt.

CARL F. HETHERING'ION. 

